The flow stress behaviors of 2618 heat resistant aluminum alloy over the strain rate range of 0.01s-1 to ls-1 and the temperature range of 400℃ to 470℃ as well as the deformation degree from 20% to 60% have been studied using a Gleeble-1500 hot simulator.

The microstructures of 2618 aluminum alloy after and before TMA have been observed by TEM, and the refining effects of the TMA on aging precipitates S′in 2618 aluminum alloy have been revealed. The reason for obviously decreasing the PFZ around the grain boundary in TMA 2618 aluminum alloy has been approached, and the thermo-kinetic behavior of the TMA was described.

The strength of the heat-resistant aluminum alloys currently in use remarkably decreases at temperatures exceeding 150℃. At present the heat-resistant aluminum alloy to be used at 250℃ is badly needed. In this paper, the experimental results show that the high-temperature properties of Al-Cu-Mg-Fe-Ni alloys can be markedly improved by the increase in copper content and the addition of manganese.

This paper describes the performance of the heat-resisting aluminium alloy and evaluate its use on the EHV substation equipment buses.It also gives on introduction of the physical characteristics of the heat-resisting aluminium alloy (Aluminc-Zirconi-urn)developed in our country as well as the cost-benefits obtained for its use on the

Various whiskers, SiC, Si_3N_4 and Al_(18)B_4O_(33),reinforced Al-8.SFe1 .3V-1 .7Si alloy composites have been prepared by the P / M technique at elevated temperature. The interfacial reaction at the Al_(18)B_4O_(33) interfaces and interfacial reaction product at the SiC or Si_3N_4 interfaces were avoided by employing the alloy matrix without Mg. The strength and modulus of the composites may be obviously improved by incorporating the whiskers in effective sequence:SiC, Si_3N_4 and Al_(18)B_4O_(33). The strength...

Various whiskers, SiC, Si_3N_4 and Al_(18)B_4O_(33),reinforced Al-8.SFe1 .3V-1 .7Si alloy composites have been prepared by the P / M technique at elevated temperature. The interfacial reaction at the Al_(18)B_4O_(33) interfaces and interfacial reaction product at the SiC or Si_3N_4 interfaces were avoided by employing the alloy matrix without Mg. The strength and modulus of the composites may be obviously improved by incorporating the whiskers in effective sequence:SiC, Si_3N_4 and Al_(18)B_4O_(33). The strength of thess compositeswill linearly drop with increasing temperature, yet their service temperature seems to be 50-100 ℃ higher than that of SiCw / 2024Al composite.